Push-button.



N0 MODEL.

PATENTED APR. 12, 1904. C. J. KLEIN.

PUSH BUTTON.

APPLIOATION FILED NOV.14, 1902. RENEWED IIlB. 23, 1904.

Pfg. 6.24

l UNITED STATEs Patented April 12, 1904.

PATENT OFFICE.

CHARLES VJ. KLEIN, or NEW YORK, N. Y.

`srneirmerr10N fermingpart ef Letters PeteneNe.'757,2os, dateaaprn 12,1904.

Applieeaen ined November i4, 190.2.V Renewed rebreerys's, 19,04. serial110,194,882.. (Ne medew Improvements iILPush-Buttons, of 'which thefollowing is a specification.

-This invention relates to electrical push-,

buttons; and it` has forl its object tolprovide an improved device ofthis class, which Will be superior in point of simplicity andinexpensiveness in construction and general efficiency.

and/durability..- A i Inl carrying out my invention I provide apush-button in which the circuit-'wires are firmly held in position fordirect contact with the circuit-closing element, the. necessity ofbinding-posts and independent contact-terminals being thus obviated.

In the dravvings yvhichform part of this spelication, and in .whichcorresponding 'parts in the several figures are denoted by the samereference characters, Figure 1. is a detail longitudinal sectional viewof a push-but--' ton embodying the invention. Fig. 2 is -Ia'detailtransverse sectional View taken ,upon the line y y, Fig. 1, and lookingin thedirection of the appended arrow'. Fig. 3V is a topplan view of theconstruction illustrated in Fig. 1;-

Fig. 4 a detail transverse sectional view taken upon the line ,'Fig.f1,and looking in the direction of the appended arrow. Fig.

lmodified form of construction.

5 is a side elevation of a modified 'form of a detail of theconstruction. Fig. 6 is a detail lon-- gitudinal sectional view of'amodified form of construction. Fig. 7` is a similar view of a stillfurther modified form of constructiom y and Fig. 8 is' a similar view ofa still is provided at opposite sides with 'transverse openings 7,through which the circuit-wires 3 3 are passed and extended'to' span theinterior of the shell 6 in parallel spaced relation. The Walls oftheshel16 are exteriorly longitudinally grooved, as at 8,`at one end of thesame to receive the circuit-wires 3 3, which latter are bent, as at 9,into position to lie within 'said grooves 8 flush' with the outersurface ofthe shell 6. The securing means 4' consist of anexteriorly-threaded plug 10, which isscrewed With the 'circuit-.Wires 33, and thus maintains the same positively in position for electricalinto an end of the shell 6 into close engagement engagement bythecircuit-,closing means- 5.

The circuit-.closing means 5 consist in the preferred form ofconstruction of ,a'nger-piece 11', which carries a metallic contact-head12 by means of a stem 13, the contact-head 12 being normally maintain-edout of engagement with -the` circuit.- wires 3- 3 by suitable tensionalmeans 14, consisting of' a spring coiled-around the stem13'between thefinger-piece 11 and a suitable step 15 for said spring. The step 15 isprovided With an axial opening 16, through which the stem l1,3 passeswith a free slidable relatiomand said step 15 is embodied in a cy-'lindrical exteriorly-threaded shell 17,'which is screwed into the endof the shell 6 opposite that which receives the plug y10, said shell 17beinglprovided with. an enlarged cup-shaped outer end portion 18, inwhich is lslidably mounted the finger-piece 11 of thecircuiteclosingmeans 5. Said enlarged outer end portion of the shell 17embodies an4 annularabvut-` ment which limits the inward play of theiinand the circuit-wires 3 3, properly bared for.

electrical contact, are firmly held in position between the same. Asecuring means 4 and the partseo'f the circuit- The body member 2 and iclosing means 5, `irrespective of the con-tacthead 12, stem 13, andspring 14, are ot insulatingmaterial. Y

- lsA cated with the'circuit-closing means 33 in a,

In place of the openings 7 in the shell 6 I may, as illustrated in Fig.5, providetransverse oblique lateral openings 19, through which thecircuit-wires 3 3 may be passed laterally into the shell 6 instead oflongitudinally, as above described.

In the modified form of construction illustrated in Fig. 6 the shell 6is provided with a `flaring base-flange at the end portion of tliel samewhich receives the plug 10, which basefiange is adapted to be supportedupon the base or inner Wall 21a of' a box or casing 21 by suitablesecuring means 22. The box or casing V21 'is designed to be installedwithin a Wall o'r similar structure 21"and the outer or open end portion21c ofthe box or casing 21, through Which the push-button device isinserted, is closed' by an annular c ap 23, Which surrounds the enlargedcup-shaped outer end portion 18 of the shell 17 and isl maintainedin'eHgagement with the wall 21b by means of an annular exterior flange24, formed 'upon said outer end portion 18 of the shell 17, when saidshell 17 is screwed into theisliell 6. This form of construction adaptstlie'improvements to inclosed installation.

In themodifie'df form of construction'illustrated in Fig. 7 Ithegeneraliconstruction is the lsame as -that previously described, withthe exception that the securing .means 25 for the circuit-Wires 3 3 areexterior'of the body member 2 and consist of a lock-nut 26, threadede'xteri'orly` upon the Ashell 6- of the body member 2 and provided withan insulating face portion vorwasher 27, adapted Ato be` screwed down onthe circuit-wires 3 3 and to liirmly bind the same in position againstan annular exterior base-ange 28, formed upon the shell 6, the adjacent.end portion of said shell 6, or that 4opposite the, circuit-closingmeans 5, being closed, as at 29, to firmly support the circuit-Wires 3.3 lwhen the same Vare engaged bythe contact-head 12.

In theconstructio'ns shown in Figs..6 and 7 the shells .6 and 17 andparts of the securing means 4 and 25, respectively, are properly formed.with respectgto `insulation of the circuit-Wires 3 3v and thecontact-head12.

v In the modified form of construction illustrated in Fig. 8 the bodymember 30 is assomanner slightly dissimilar to that above de- 1 ed atone'end,` as at 32, to receive the securexteriorly threaded plug 10.

scribed, saidj body member consisting ofa Ishell 31,'of hardrubber,porcelain, or other insulating materiaLWliich is interiorlythread- .ing means-4 for the circuit-Wires, saidsecuringmeanslconsisting oi' the above-described The circuitwires 3 3 are iedthrough the shell 31 through suitable openings 8 in parallel relation.The circuit-closing means 33 embody a spun metallic shell 34, -which' iscrimped at 'its inner or j Iower end, as at 35, i nto exteriorengagement Wwith the shell 31. Within the shell 31 is formed atransversestep 36 for the coilspring 14, which surrounds the stem 13 of thecontact-head 12, which latter is arranged beneath or inward of the step36, the stem 13 passing slidably through a suitable opening in said step36. The stein 13 is provided at its upper or outer end'with the usuallingerpiece 11.

The operation and advantages of my irnprovements inv push-buttons willbe readily understood. Referring to Figs; 1 and', inclusive,thecircuit-wires 3 34 are in assembling lead through openings 7 in theshell v6 and held firmly in position by the plug 10. Vtrhen thefinger-piece 11 is depressedagainst the spring 14, the contact-head'12engages the circuit- Wires 3 3 and causes an electrical circuit directlythrough the same. Tli'euse of separate and distinctcontact-pieces,terminals, or binding-posts for the circuit-wires is thusobviated, and the body member 2 of the device, together with thesecuring means 4 and the circuit-closing means 5, constitute a complete,simple, and thoroughly Vefiicient device in which the `operationsot'wiring and electrical connection and disconnection ai'e extremelysimple.

The operation -and method 'of use of the IOO VThe operation and methodof use of thel modified form of construction illustrated in Fig. 8 are.substantially identical With-'those above described;'but said form ofconstruc-I` tion is superior in -pointof inexpensivenessV in manufactureand convenience in assembling` parts. v Having thus described myinvention, I claim and desire4 to secure by Letters Patent- 1.Animproved device of the class described, comprisinga tubular bodymember provided at opposite sides with transverse openings, adapted toreceive circuit-Wires extending through sa`1d body member, securingmeans fitting within one end of said body member and engaging with saidcircuit-Wires,

and circuit-closing means fitting within vthe other end of said bodymember and arranged' for direct engagement With said circuit-Wires toclose an electrical circuit through the sameg IIO 2. An improved device'of the class de` scribed, comprising a tubular body memberl provided atopposite sides with transverse openings adapted to receive circuit-Wiresextending through said body member, said body member being closed at oneend and provided at the other end with circuit-closing means arrangedfor direct engagement with said cir- `formed tov receive circuit-wirestransversely and interlorly, sind body member belng pro- Witnesses:

cuit-Wires to close an electrical circuit through cuit-wires to close anelectrical circuit through the sume.- the same. 1o

3. An improved device of the class de- In testimony Whereoflhave signedmy name scribed, comprising a tubular body member in the presence of thesubscribing Witnesses.

- CHARLES J. KLEN.

vided at one end with circuit-closing means R. T. MCGUSTY, arranged fordirect engagement with send c1r- S. SCHLESENGER.

